扫描电子显微镜
合金
材料科学
微观结构
光学显微镜
硼
锶
钛
冶金
钛合金
分析化学(期刊)
化学
复合材料
色谱法
有机化学
作者
Ji Hua Peng,Yao Deng,Jian He
出处
期刊:Advanced Materials Research
日期:2011-08-01
卷期号:311-313: 1017-1020
被引量:4
标识
DOI:10.4028/www.scientific.net/amr.311-313.1017
摘要
Al-Ti-B-Sr-RE master alloys were prepared firstly by the reaction of complex halide salts with molten aluminum at 800°C, and then the addition of Al-RE and Al-Sr master alloys into the melt. The constituent phase and microstructure were characterized by XRD, optical microscope (OM) and scanning electron microscope (SEM). The element content was analyzed by spectrometer, X-ray fluorescence spectrometry and electron probe microscope. Ti 2 Al 20 RE, SrB 6 , LaB 6 , Al 4 Sr and Al 11 La 3 are the constituent phases in these master alloys. The constituent phases containing Sr and RE in the Al-Ti-B master alloy depend on the ratio of Ti and B. The critical ratio of Ti and B is 2.2:1. Obviously, SrB 6 and LaB 6 phases are the reaction products of AlB 2 with Sr or La during master alloy fabrication. The two layer lump-like Ti-Al-RE particles formation mechanism is proposed.
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